Windows: If you're a fan of the web site monitoring service Pingdom, they've released a handy desktop alert app to put site updates in your system tray.

After going public earlier this year, Pingdom offered free single-site monitoring including SMS alerts, email alerts, and an iPhone app. Now you can grab a free account and the Pingdom Desktop Notifier for instant system-tray confirmation that your monitored site is online and functioning.

Check out the site for additional details and if you have another favorite site monitoring application, system tray-based or not, let's year about it in the comments.